You can't.
You do not have to convert it at all. When you publish/finish the Windows Movie Maker project (in this case, an Audio project) the process automatically converts the file format from a MSWMM to a .wma.In other words, Publish/Finish the project.
A Windows Movie Maker project file is in .MSWMMformat.
No. You can't extract a vlc file into Windows Movie Maker. You must convert the file before it can be imported.
In the Windows Movie Maker program, exporting is accomplished through the Publish or Finish Movie options (depending on which version you are using). In order to convert a Windows Movie Maker project to Standard Viewing format, you have to Publish or Finish the movie.
A Windows Movie Maker project file is in .MSWMMformat.
First you need to Publish/Finish the Audio project in Windows Movie Maker. The finished product when exported from the program is .wma. Then you will have to convert the .wma audio into .mp3 format using an audio converter.
Click on File, Save Project. Choose a location to save the video project, name it and there you go!
Resulting effectiveness of a Windows Movie Maker project is dependent on the creator's creativity.
You cannot convert Windows Movie Maker (.MSWMM) files at all since they are in 'project' form. The only way to change a MSWMM to a standard format is through the Publishing/Finishing/Saving process.
Make sure you have Published/Finished your Windows Movie Maker project file first. Once you have done that, download and install an audio converter on your computer. Use the converter to convert the .wma audio file (produced by Windows Movie Maker) into a .mp3.
Finalizing a Windows Movie Maker project is called Publishing (or Finishing the Movie in earlier versions of the program).
In order to see a Windows Movie Maker project file on ANY media player, you must first Publish/Finish the video. This exports/converts the project file into Standard Viewing format. Then it can be played on a media player.